一、前言在欧洲和北美已经预测出酸雨对人类生活环境产生非常危险的影响,而且其危害范围正逐渐扩展。酸雨问题已经成为与由于CO_2浓度增大造成世界性气候变化问题并重的、地球规模的环境问题了。酸雨的危害,在日本虽然还是局部的,但已显示出逐渐扩展的趋势,因而酸雨的影响,不能不引起人们的关注。 I. Preface In Europe and North America, it has been predicted that acid rain will have a very dangerous impact on the living environment of humankind and its harm is gradually expanding. The problem of acid rain has become an environmental issue of a global scale that parallels the issue of worldwide climate change caused by the increased concentration of CO 2. Acid rain hazards, although still partial in Japan, but it has shown a gradual expansion of the trend, so the impact of acid rain, can not but cause for concern.